Finding the Fourth Proportional to 30,569.32, 42,185.50 and 17,140.56

Step by Step Solution

1. Step 1: Write the proportion equation
   30,569.32 : 42,185.50 = 17,140.56 : x
2. Step 2: Convert to fraction form
   30,569.32/42,185.50 = 17,140.56/x
3. Step 3: Cross multiply
   30,569.32x = 42,185.50 × 17,140.56
4. Step 4: Simplify right side
   30,569.32x = 723,083,093.88
5. Step 5: Solve for x
   x = 723,083,093.88/30,569.32
6. Step 6: Final answer
   x = 23,653.88